My College Books

Problems On Isometric Projections 1 ] Projections of frustum of the pentagonal pyramid are given, draw it's isometric view. Solution Steps: First draw isometric of its base. Then draw the same shape as a top, 60mm above the base pentagon center. Then reduce the top to 20mm sides and join with the proper base corners. 2 ] Projections of a frustum of the cone is given, draw it's isometric view. Solution Steps: First draw isometric of its base. Then draw the same shape as a top, 60mm above the base pentagon center. Then reduce the top to 20mm sides and join with the proper base corners. 3 ] A square pyramid of 30mm base sides and 50mm long axis, is centrally placed on the top of a cube of 50mm long edged. Draw the isometric view of the pair. 4 ] A triangular pyramid of 30 mm base sides and 50 mm long axis, is centrally placed on the top of a cub of 50 mm long edges. Draw the isometric view of the pair.  Solution steps To draw isometric of a cube is simple. dra...

Isometric Drawing Isometric Drawing is a type of pictorial projection in which all three dimensions of an object are shown in one view and if required, Their actual sizes can be measured directly from it. 3D drawing can be drawn in numerous ways as shown below, All these drawings may be called 3 Dimensional drawings, photographic or pictorial drawings. Here no specific relation among H, L & D axes is maintained. Typical Condition In this 3D drawing of an object, In which all three dimensions axes are maintained at equal inclinations with each other. ( 120º ) Now observe below-given drawings. One can note specific inclination among H, L & D axes. Iso means the same, similar or equal. Here one can find dual inclination among H, L & D axes. Each is 120 inclined with the other two. Hence it is called isometric drawing. Some im portant terms Isometric axes, lines, and planes The three lines AL, AD, and AH, meeting at point A and making 120 º angle with each other termed Isometr...